Build a Natural Swim Pond Using a Proven Wetland Filtration Design
Professional construction drawings, hydraulic layouts, material schedules and operating guidance for homeowners and contractors building a chlorine-free natural swimming pool.
Designed to be constructed by you, your local pool builder or a general contractor.
Plan Details
Swim Zone 7.72 x 3.33 m (25.7 m²) | 25.3 x 10.9 ft (277 ft²) * Alternate Dimensions Available on Request
Swim Zone Depth 1.8 m | 5.9 ft
Regeneration Zone approx. 45 m² | 485 ft², 1 m | 3.28 ft deep, wrapping the full way around the swim zone
Ratio (Regen Zone to Swim Zone) approx. 1.75:1
Footprint 12.64 m x 8.28 m | 41.5 ft x 27.2 ft, including the deck
Volume 45 700 litres | 12 100 US gallons
Bather Load Max 12 p/day
Timber deck running out over the water, with a second smaller jetty opposite
Wrap-around planted regeneration zone with a natural, invisible edge
Excavated build with an EPDM rubber liner, no concrete shell
Detailed drawings and material schedule
Designed for DIY owners and local contractors
This plan set is for a swim pond, a natural swimming pool built to look and feel like a natural pond rather than a pool. The regeneration zone wraps the full way around the swim area and finishes in a soft, invisible edge running straight out into the surrounding garden. There is no coping line and no visible pool wall.
The whole pond is an excavation lined with 1.14 mm EPDM rubber over F55 geotextile. There is no concrete shell to build and no waterproofing system to specify, which is what keeps this design within reach of a self-builder.
A submerged retaining wall separates the deep swim zone from the shallow regeneration zone, holding back the gravel and planting while keeping the swimming area clear. The plans are drawn around a sandbag wall, the simplest method to build by hand and the safest for the liner. A brick, stone or timber wall can be used instead, and both approaches are drawn in full. The structural design of a masonry wall is handled by a qualified engineer or builder locally.
The swim zone is 1.8 m deep, giving proper swimming depth and the thermal mass that keeps water cool and stable through summer. Diving is not recommended unless the depth, profile and entry area are specifically designed and approved under local safety standards.
Entry to the swim zone is via the deck, the stepping stones or stairs formed in the retaining wall, and this can be adapted if you want more steps or easier access.
THIS PLAN IS SUITABLE WHEN
- You want a natural swim pond with a soft, organic shape rather than a formal rectangle, built around a 7.72 × 3.33 m swim zone.
- You have space for an overall footprint of approximately 12.64 × 8.28 m (41.5ft x 27.2ft), including the deck. * Alternate Dimensions Available on Request
- You want the planted regeneration zone wrapping the full way around the swim zone, finishing in an invisible edge with no coping line.
- You want a timber deck running out over the water as the main entry point.
- You will work with local contractors or are an experienced DIY builder.
- The plans are designed to be built without me. If you'd rather have someone to talk it through with, consultation calls can be booked as you need them.
- You can appoint local structural, electrical and waterproofing professionals where required.
CHOOSE A BESPOKE DESIGN WHEN
- You need substantially different dimensions.
- Your wetland must be separate from the pool.
- Your site has unusual levels, soil or access conditions.
- You want a different filtration configuration.
- You require site-specific structural or planning drawings.
Any size you need
This design comes as standard with a 7.72 x 3.33 m swim zone (25.7 m²) inside a total footprint of 12.64 x 8.28 m, or 25.3 x 10.9 ft (277 ft²) inside 41.5 x 27.2 ft.
That standard size is a starting point, not a limit. Tell us the space you have and for $200 we will rework the entire plan set to your dimensions. Not just redrawn drawings, but a fully recalculated package:
- Plans and construction sections at your dimensions
- Hydraulic calculations rerun for the new water volume and wetland area
- Bill of quantities for the new size
- A project specific materials list you can price and order from
That is the part most plan sets get wrong. Scaling a drawing is easy. Scaling the pump duty, pipe sizing, wetland area and gravel volumes correctly is what keeps the pool clear once it is full of water. You get a plan that has been engineered for your pool, not a stretched version of somebody else's.
Longer and narrower for a side return, shorter and wider for a courtyard, or scaled up for a bigger plot. You do not need to design around the plan. The plan is designed around you.
More Than Drawings: A Coordinated Natural Pool System
Conventional pool contractors understand pool structures, but many have limited experience designing planted biological filtration. This package gives your local team the specialist natural pool information they need, while allowing them to use locally accepted construction and waterproofing methods.
Complete Construction Plan
Receive detailed, annotated layouts and sections covering the swimming zone, planted regeneration area, pool depths, dividing walls, access points and principal construction details.
The drawings are intended to give you or your builder a clear understanding of how the complete natural pool system fits together.
Hydraulic and Filtration Design
The package includes the specialist circulation details that make a natural pool function correctly.
INCLUDING
- Pump and pipework layouts
- Skimmer and debris collection
- Wetland water distribution
- Underdrain configuration
- Return inlet positioning
- Target circulation rates
- Valves, access points and flow control
Detailed Bill of Materials
Use the included material schedule to plan your purchases, compare local suppliers and reduce the risk of forgetting essential components.
INCLUDING
- Base quantities
- Recommended order quantities
- Waste and contingency allowances
- Material specifications
- Optional components
- Space for supplier and pricing information
Comprehensive Owner’s Manual
Your guidance does not end when construction is complete.
The included owner’s manual explains how to commission, operate and maintain the pool once it has been filled.
It covers routine maintenance, plant care, water testing, algae management, seasonal operation, troubleshooting and long-term system care.
Does this work in all climates?
Yes, and this particular plan is already well set up for it.
Because the regeneration zone wraps the full way around the swim zone, this design runs at roughly 1.75 : 1. In plain terms, the planted area that cleans the water is about 1.75 times the size of the swimming area. Most plans sit nearer 1.25 : 1, which works in warm temperate climates and anything cooler. This one carries considerably more cleaning capacity than that.
If you're in a tropical, subtropical or very hot climate, the water warms faster and the biology has to work harder, so the pool needs more cleaning capacity. On most designs that means enlarging the wetland and widening the footprint.
Here the footprint does not change. The wraparound layout already sits well above the 1 : 1 ratio we recommend for hot climates, so the pond is built exactly as drawn at 12.64 m x 8.28 m (41.5ft x 27.2ft). Three things still change.
UV is not optional. In cooler climates a UV steriliser is a useful addition. In hot climates it's a required part of the system. It keeps the water clear at temperatures where algae would otherwise take hold, and it treats every litre that passes through the circulation. It's built into the specification, and a hot climate pool should not be commissioned without it.
Keep the water cool. Temperature is the single biggest factor in how hard a natural pool has to work, and shade is the cheapest way to control it. A shade sail over the pool makes a real difference, and so does depth, because a deeper pool holds more water and simply takes longer to heat up. At 1.8 m the swim zone here already carries useful thermal mass. The plans include guidance on both.
Add aeration. Warm water holds less oxygen at exactly the point your biology needs more of it. Aeration closes that gap and keeps the water moving so nothing stagnates. In hot climates we specify it as standard rather than as an upgrade.
Respect the bather load. Every pool has a limit on how many people it can comfortably carry, and in hot climates that limit matters more, because the pool is under more strain and gets used far more often. This plan is designed for up to 6 swimmers per day in warm & tropical climates. Going well beyond that regularly is the fastest way to lose water clarity.
You don't need to work any of this out yourself. The hot climate specification is set out in full in the plan set.
Designed From Real Natural Pool Experience
These plans were developed by Andrew Jamieson, founder of Leaf & Stone Natural Pools and the DIY Natural Pool Academy.
Andrew has designed and built natural swimming pools since 2016, working on projects ranging from private residential pools to large planted aquatic landscapes.
The details in this plan are based on constructed systems, practical site experience and ongoing refinement, not theory alone.
The objective is to make professional natural pool knowledge accessible to homeowners and contractors who do not require a completely bespoke design.
Our Proven Natural Pool Filtration System
Our natural pool filtration method has been refined through more than a decade of professional design and construction experience. While every natural pool relies on the same fundamental principle, circulating water through a gravel and plant based biofilter, the difference between an average result and exceptional water quality lies in the details.
Our plans include two proven filtration configurations:
The Two Pump System
Our recommended solution for the highest water clarity, optimal circulation, and long term performance.
The One Pump System
A simplified, lower cost alternative for those who value minimalism. While still highly effective, it involves a modest compromise in swimming area circulation and overall water clarity.
WHY WE DON'T
USE AIRLIFT PUMPS
Unlike many amateur natural pool designs, our system does not rely on air lift pumps. This is a deliberate engineering decision based on how effective biological filtration actually works.
A natural pool filtration system has two distinct jobs:
- Continuously move water slowly and evenly through the biofilter to maximise biological treatment.
- Remove leaves, debris, and organic matter from the swimming area before they decompose and release nutrients into the water.
These two tasks require fundamentally different flow characteristics.
Efficient debris removal demands high energy circulation. A powerful circulation pump creates movement throughout the swimming area, keeping debris suspended long enough for skimmers to capture it before it sinks and breaks down.
Biological filtration, by contrast, performs best with slow, continuous, 24 hour circulation through the gravel and plant filter. Gentle, even flow allows beneficial microorganisms to thrive and efficiently process nutrients.
Trying to achieve both objectives with a single air lift pump is an inherent compromise. While air lift systems are often promoted for their efficiency, the real world energy savings are relatively small. The trade off is reduced circulation within the swimming area, poorer debris collection, and ultimately lower water clarity.
By separating circulation from biological filtration, our recommended system ensures both functions perform at their best. The result is cleaner water, healthier filtration, and a natural pool that remains clearer, more stable, and easier to maintain over the long term.
Want the full comparison? Read the article: Natural Pool Filtration, Airlift Pump vs Wetland Filter, with real flow rates, running costs and how each method holds up over the years.
Take a Look Inside
The plan package includes 29 pages of detailed, annotated construction drawings covering the pond layout, the wraparound wetland, the deck, plumbing, circulation and the key building details. A comprehensive owner’s manual and detailed bill of quantities are also included as separate documents. Review 12 sample plan pages below.
Build With a Clear Plan From the Start
A natural pool is a significant construction project. The decisions made before excavation begins will determine how effectively the finished pool circulates, filters and operates.
This natural pool plan package gives you a clear framework for building a natural pool with confidence.
COST $497 USD
QUESTIONS? BOOK A FREE 15 MIN CALL
Get the Complete Plan PackageYOU WILL RECEIVE
- Complete construction drawings
- Pool and wetland layouts
- Hydraulic and circulation details
- Skimmer and pipework guidance
- A detailed bill of materials
- Planting and commissioning guidance
- A comprehensive owner’s manual
- Whatsapp / Email support to clarify plan details *
* If you or your contractor need clarification on information contained in the supplied plans, you can contact us by WhatsApp or email. Site-specific design changes, hydraulic recalculations, construction supervision and troubleshooting are available separately.
BACKED BY A 30 DAY MONEY BACK GUARANTEE.
If the plan doesn’t suit your site, book a free 15 minute call and we’ll look at it together. If I can’t solve it (free of charge), I’ll refund you in full.
"Working with Andy has been wonderful. He has guided us through the process step by step. We test the water every few months, send him the results and he tells us what we need to do or add to keep the water balanced.
If you are thinking of building a living pool, Andy is your man. He is responsive, professional, knowledgeable and, most importantly, his pools WORK.
It's the best investment we made during the build. Worth the time, effort and expense, multiple times over. Go for it is my advice."
"Working with Andy has been an exceptional experience. Building a natural pool isn't a one-time transaction - it's a journey. Every project is unique, and Andy brings a level of care, expertise, and attention that reflects that. Over the years, from the initial design through construction and ongoing maintenance, he has guided us every step of the way. His knowledge, patience, and unwavering support have made the entire process both enjoyable and rewarding. We are incredibly grateful for the experience, the pool we've created, and the continued guidance Andy provides."
(Owner, Potkook Mountain Lodge)View Full Case Study
Built for Use With Local Contractors and Suppliers
The plans are designed for international use.
Specific brands and products may differ between countries, but the package explains the required function, size and specification of the principal components. This allows you and your contractor to source appropriate local equivalents.
The design can be constructed using different locally accepted pool-shell and waterproofing methods, provided the final structure is suitable for the site and correctly engineered.
* Local professionals should be appointed where required for: Structural engineering, Soil and foundation assessment, Waterproofing, Electrical installation, Safety barriers and fencing, Planning and building approvals, Local hydraulic or suction-safety compliance
FAQ
Do I need to build the pool myself?
Is this a structural engineering plan?
Can I change the pool dimensions?
Can I make the pool shorter?
Can I make the pool wider or deeper?
Can my local contractor build from these plans?
Are the materials available internationally?
Does the plan include a bill of materials?
Does the plan include plant guidance?
Is this suitable in Hot Climates?
Is the plan suitable for cold or freezing climates?
Does the pool require chlorine?
Is the pool maintenance-free?
Do I receive support with the plan?
How will I receive the files?
Can the files be shared with my contractor?
Can I get a refund?
Natural Swim Pond with Wraparound Wetland and Deck
COST $497 USD
Get the Complete Plan PackageBACKED BY A 30 DAY MONEY BACK GUARANTEE.
If the plan doesn’t suit your site, book a free 15 minute call and we’ll look at it together. If I can’t solve it (free of charge), I’ll refund you in full.
IMPORTANT INFORMATION
These plans provide the specialist natural pool layout, wetland filtration design, circulation principles, material guidance and operating information. not a site-specific structural engineering package.
The final pool structure, foundations, reinforcing, waterproofing and construction method must be designed or approved according to:
- Local ground conditions
- Pool depth
- Construction method
- Local building regulations
- Applicable engineering requirements
The bill of materials focuses primarily on the specialist components required for the natural filtration and circulation system.
Quantities for concrete, reinforcing steel, excavation, spoil removal, structural masonry, labour, decking, paving, fencing, landscaping and statutory approvals will depend on the site and chosen construction method.
